Allen-Bradley MicroLogix 1400 - Critical and Non-Critical Errors; Module Error Definition Table

Rockwell Automation Publication 1766-UM001I-EN-P - June 2015 187
Troubleshooting Your System Appendix C
Critical and Non-Critical Errors
Non-critical module errors are recoverable. Channel errors (over-range or
under-range errors) are non-critical. Non-critical error conditions are indicated in
the module input data table. Non-critical configuration errors are indicated by
the extended error code. See Extended Error Codes for 1762-IF2OF2 on page
188.
Critical module errors are conditions that prevent normal or recoverable
operation of the system. When these types of errors occur, the system leaves the
run mode of operation. Critical module errors are indicated in Extended Error
Codes for 1762-IF2OF2 on page 188.
Module Error Definition Table
Analog module errors are expressed in two fields as four-digit Hex format with
the most significant digit as “don’t care” and irrelevant. The two fields are
“Module Error” and “Extended Error Information”. The structure of the module
error data is shown below.
Module Error Table
“Don’t Care” Bits Module Error Extended Error Information
1514131211109876543210
0000000000000000
Hex Digit 4 Hex Digit 3 Hex Digit 2 Hex Digit 1